Solution and plastic



Patented Jan. 13, 1931 UNITED STATES PATENT OFFICE I. G. FABBENINDUSTRIE AKTIENGESELLSCEAFT, OF FRANKFOBT-ON-THE MAIN,

GERMANY, A CORPORATION OF GERMANY SOLUTION AND PLASTIC No Drawing. Original application died April 22, 1926, Serial No. 108,951, and in Germany April 24, 1925.

Divided and this application filed October 23, 1928. Serial No. 143,805.

R O glycol residue O -H (in which R indicates an aryl grou are excellently suitable for preparing so utlons of organic substances (which term, however, 13 not to include the usual solvents of low boiling point and such materials as are well known to be insoluble in most organic solvents such as coal or wood), for example cellulose bodies, that is to say water-insoluble cellulose ethers, for instance ethylcellulose,

for the other more or less solid constituents of lac uers, such as resins, lacs, slccatives,

dyes'tu s, caoutchouc, oils, and other organic substances, and can be employed advantageously in the industry lacquers and colors,

varnishes, and the like. The glycol derivatives can be employed alone or in mixture with other solvents.

The said glycol derivatives are of special value in the industry of cellulose lacquers, plastics and films, as they are excellentl suitable for use as plasticizers by reason 0 their high boiling point and low volatility. They may be employed alone or in mixture wit other plasticizers such as for example camphor, castor oil, esters of phosphoric acid with phenols, esters of phthalic acid and other plasticizers. I do not lay claim in this application to the use of ethylene glycol mono-aryl-ethers as plasticizers for cellulos'e ester preparations and the appended claims should be read with this limitation.

As the above mentioned glycol derivatives are not only excellent solvents for cellulose bodies, but also for resins, oils, dyes and the like, it is possible to prepare cellulose 'body lacquers and fplastics containing a substantial amount 0 natural or artificial resins, for example of colophony, sandarac or themcalled ester resins, caoutchouc or any other leather oil or the like as a desired addition. Thereby the properties of the lacquers or plastics may be adapted to all requirements.

The following examples will further illustrate how myinvention may be carried out in practice, but the invention is not limited to these examples. The .parts are by weight.

' Ewample I parts of ethyl cellulose are dissolvedin a mixture of 500 parts of isobut l acetate, 250 parts of toluene, 180 parts 0 ethyl alcohol and between .10 and 20 parts of ethylene glycol mono-phenyl ether. The resulting lacquer forms clear, adherent coatings of high suppleness. Other plasticizers or resins, coloring matters or the like may also be added to the solution. Instead of ethylene glycol mono-phenyl ether, the corresponding mono-cresyl ethers or mixtures thereof may be employed.

' Ewample 2 50 parts of alcohol-soluble nigrosine .(see G. Schultz, Farbstofftabellen, 6th edition,

No. 698) are dissolved in about 200 parts of ethylene glycol mono-cresyl ether or a mixture thereof with the formate of ethylene glycol mono-prophyl ether while slightly heat1ng and diluted with about 150 parts of a mixture ofethyl, alcohol and benzine. The solution can be employed for example for blackening colored shoes.

The mixture may also contain Russian perfume.

I claim:

1. A composition of matter'comprising a cellulose ether and a mono-aryl ether of ethylene glycol.

2. A composition of matter comprisin a cellulose ether and a mono-aryl ether 0% a glycol.

3. A lacquer comprising a water-insoluble cellulose ether, a mono aryl ether of a glycol and the customary solid constituents of lacquers.

4. A lacquer comprising a water-insoluble cellulose ether, a mono aryl ether of a glycol and an organic liquid dissolving the said substances.

as I

my hand.

GERHARD STEIMMIG. 

